Automatic spool-changing apparatus for looms.



A. G. KOBCHLIN.

AUTOMATIC sPooL CHANGING APPARATUS PGR LooMs.

VAPPLICATION FILED APB.25, 1910.

1,039,547. Patented Sept. 24, 1912.

n A? y@ ZW t *uNTTEn sTATEs PATENT".y oEEroE.

ALBERT GEORG KOECHLIN, OF STEINEN, GERMANY, ASSIGNOR TO SPINNEREI UND WEBEREI STEINEN A. Gr.,

OF STEINEN, GERMANY.

AUTOMATIC SPOOL-CHANGNG APPRATUSFOR IOOMS.

Application led April 25, 1910. Serial No. 557,565.

To @ZZ whom it may concern:

Be it known thatyI, ALBERT' GEORG KOECH- Lix, a citizen of Switzerland, residing at vention.

` Steinen, Grand Duchy of Baden, Germany,

have invented certain new and useful Improvements in Automatic Spool-Changing Apparatus for Looms, of which the following is a specification.-

This invention relates to yimproved mechanism for automatically drawing the end of the thread oifthe spool ready to be transferred to the shuttle, and thev said mechanism differs from known mechanism of this kind in,

the drawing off being effected bygrippers which grip the -thread-end wound on ,thenose of the spool tube 4or directly on thel spindle and draw suliioient thread from the spool for threading into the shuttle-l One form of the improved mechanism is described hereinafter and .illustrated in the accompanyingv drawings in which all those parts of the loom are omitted which' are not necessary for the understanding of the inln the drawings :Figure l is a front elevation of the entire arrangement. Fig. 2 is a side elevation partly in section on the line A-B of Fig. 1. `Fig. 3 shows on a larger scale the gripper mechanism separately, with the gripper jaws open. F ig. 4: is a rear 'elevation of the gripper mechanism, and Fig. .shows the gripper mechanism with the gripper jaws closed:

For the purpose of storing the largest possible quantity of spools, the well-known revolving magazine l' is combined With .a

.box magazine 2 (likewisevof well-known construction), in such manner that at each step of the forward movement of the revolving magazine a 'fresh spool moves into the uppermost empty spool carrier of the revolving magazine, while a. filled chamber of the box magazine which rocks on au eccentric axis is brought by known means opposite the chutes 3 leadinor to the revolving maga-v zine as soon as. the preceding carrier is emptied,

In the A"improved apparatus the loose' thread-end, previously wound in the spinning mill above the yarnd upon the spool vtube 5 or in many cases upon the naked spindle 6, is `grippedby the 'gripper jaws, drawn off and held fast until the spool has ward, with the resultthat `the short been'v transferred to the shuttle and the thread has been threadedin the shuttle. For-'this purpose the gripper mechanism is fixed on Aa rocking lever 7 by which it is operated.

The rocking of the lever 7 is produced by `i the weft-stop motion shaft 8 which is'pro-l vided in all looms and which, as is well 4 known, starts the operation of changing the spoolsin automaticl looms.` As soon as this shaft 1s moved by the action of the weft feeler, the rod 10 which is connected to the shaft 8 by means of the lever arm 9, causes the' horizontal lever arm 11 to swing uparm 12.', to the end of which the lever arm lt is connected by a rod 13, is swung outward.

The rod 14 is forked at the top and is pivvertical oted. on the same pin 15 as the lever 7. vThe lower cylindrical end 16 of the arm 14 is slidable on the pin 17 which is xed to the lower end 1S of the lever arm ,7.` 'j

The gripper mechanism consists of a number of two-armed levers 19, 20 arranged around the end 18 of the lever arm7, and pivoted on pins 23 fixed thereto. The front lever arms 19 constitute the gripper jaws, and the rear lever larms 20-are pressedi by springs (not shown) against the pin y,17 so lthat the gripper jaws 19 are apart, that is to say,`\the gripper is open (Fig.I 3).y If nongthe arm 14 'swings outward, the end 16 Erst forces the4 rear gripper arms 2O apart,V andthusfcloses the gripper jaws 19. Then the endljvnieetsv the disk 21 fixed on the pin 17, whereupon it carries the lever arm 7 and gripper mechanism along with it until the end of theoutward movement...

Sincel in the position of rest the nose of the spool whichvisready to be transferred into the. shuttle, is situated just'.A between lthe gripper jaws .19, vthe rst 'portion of the movement lof the lever arm 'Meifects the gripping, and the lsecond portion effects the drawing off of the thread-end from the spool. If'then the arm 14 swings inward again, this movement is also shared by the arm ,7 until'it is stopped by a stop 22 fixed to the'loom framingwhereupon the return movement 'of: the arm ltback' to the starting point,"effects the closure of the levers 9.0 and the opening of the gripper jaws 19,

AThe Aimproved apparatus allows of the use of ,wooden throstle spool tubes, as well 4as of ordinary self-acting mule spool tubes and.ordinary'throstlespool tube: of paper.

Having now described my invention what I claim as new and desire to secure by Lettors Patent is :e-

l. In automatic spool changing apparatus for looms, the combination with a spool magazine having a step by step lrotation* Ytube or of the spool spindle, immediately prior to transference of the spool, means which draw the thread-end 'oii the spool and hold it fast until it has been threaded into the shuttle.

2. In automatic spool changing' apparatus for looms, the combination with a" spoo'l magazine having a step by `step-.rotation and aY spool changing shaft, of apparatus for automatically drawing the threading.y in thread off the' spool comprising a ,bell

quiredg crank lever, a rod connected thereto, an arm rattached to said rod and the spool-changing Aen ,of said second 'lever arm, the end of the said first lever arm being slidable on the second pin mentioned, whereby the gripper Iis swung out and in, and the gripper jaws are closed `and opened while the changing shaft lrocks once to-and-fro and produces a` similar rocking of the said irstvlever arm when a fresh supply of weft thread is re- 'In testimony whereof I-have hereunto set my hand iii presence of two `subscribmg wit- IliSSeS. l

ALBERT GEORG KoEoHLiN.

` Witnesses:

CARL W. SoHMrrr,

AUGUST OosTERMAN.

Copies of this patent may "be obtained for ve cents each, by vaddressing the Commissioner of Patents,

' Washington, D; C.

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